Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 7,595	$ 5,308	$ 22,059	$ 15,043
Other Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, net of taxes of $327 and $(690) for three months ended September 30, 2017 and 2016, respectively and $(5,154) and $(3,698) for nine months ended September 30, 2017 and 2016, respectively.	(512)	1,082	8,068	5,792
Amortized holding losses on held-to-maturity securities transferred from available-for-sale, net of taxes of $(11) for three months ended September 30, 2017 and 2016, and $(32) and $(161) for nine months ended September 30, 2017 and 2016, respectively.	16	16	51	251
Less: reclassification adjustment for realized gains included in net income, net of taxes of $99 and $182 for three months ended September 30, 2017 and 2016, respectively and $230 and $440 for nine months ended September 30, 2017 and 2016, respectively.	(155)	(284)	(359)	(690)
Other comprehensive income (loss), net of taxes	(651)	814	7,760	5,353
Comprehensive income	$ 6,944	$ 6,122	$ 29,819	$ 20,396